Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dbd87d69f98feba…

MALICIOUS

PDF

42.5 KB Created: 2021-05-15 05:13:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f232adc59e9f09fa23a1cf1abf29dc67 SHA-1: 6bf64bf93d4659cdd0b061d9b1260c709ceb3c6c SHA-256: 3dbd87d69f98feba0481c92c0c4eecb7442e274a1fed726b8fbe618e3f0d9dbe
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, masquerading as game hack generators. The primary lure is a link to 'my-robux-game-hack' hosted on netcdn.xyz, which is part of a chain leading to further malicious content. The document body, though heavily obfuscated, contains embedded URLs that also point to potentially malicious sites related to game cheats and generators.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/431946152/my-robux-game-hack In PDF document text
    • http://www.brtes.com/images/hack-robux_GM431946152.pdfIn PDF document text
    • http://www.brtes.com/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.brtes.com/images/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://www.brtes.com/images/get-me-robux_GM431946152.pdfIn PDF document text
    • http://www.brtes.com/images/coin-master-cheats-for-free-spins_GM406889139.pdfIn PDF document text
    • http://www.brtes.com/images/roblox-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.brtes.com/images/coin-master-hack-injection_GM406889139.pdfIn PDF document text
    • http://www.brtes.com/images/coin-master-free-spins-23-march-2021_GM406889139.pdfIn PDF document text
    • http://www.brtes.com/images/how-to-get-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.brtes.com/images/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://www.brtes.com/images/earn-free-robux_GM431946152.pdfIn PDF document text
    • http://www.brtes.com/images/today-free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.brtes.com/images/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.brtes.com/images/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://www.brtes.com/images/2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://www.brtes.com/images/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://www.brtes.com/images/coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.brtes.com/images/twitter-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://www.brtes.com/images/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • http://www.brtes.com/images/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004846.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4846 25868 bytes
SHA-256: 58a3ceb7421602ee974ca05c13c1efba6239984352e0d35f8e786e43cf63c286
font_01_sfnt_off000083f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83F4 18228 bytes
SHA-256: 061086f3647f2708bedfba3c3449e34ca39340f9a5e056b2aad302ae8ac83e9c

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